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Home › Gemstones › Natural Untreated Gemstones

Natural Untreated Gemstones

Discover genuine untreated gemstones selected for natural beauty, rarity, and authenticity.

Natural Untreated Gemstones Weight
Natural Untreated Gemstones Size
Natural Untreated Gemstones Clarity
Natural Untreated Gemstones Price
Natural Untreated Gemstones Treatment

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color Natural Untreated Gemstones
Black Natural Untreated Gemstones
Blue Natural Untreated Gemstones
Brown Natural Untreated Gemstones
Golden Natural Untreated Gemstones
Gray Natural Untreated Gemstones
Green Natural Untreated Gemstones
Multicolor Natural Untreated Gemstones
Orange Natural Untreated Gemstones
Pink Natural Untreated Gemstones
Purple Natural Untreated Gemstones
Red Natural Untreated Gemstones
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Violet Natural Untreated Gemstones
White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
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17.76ct Bi-Color Ametrine, Pear Shape, VS

17.76ct Bi-Color Ametrine, Pear Shape, VS

22.1 x 15.2 mm

$ 116.75

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17.47ct Green Prehnite, Fancy, Transparent

17.47ct Green Prehnite, Fancy, Transparent

20.1 x 11.8 mm

$ 30.24

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2.34ct Orange Hessonite Garnet, Cushion, VS-SI

2.34ct Orange Hessonite Garnet, Cushion, VS-SI

7 x 7 mm (calibrated)

$ 38.60

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4.45ctw Yellow Citrine, Oval, VVS-VS
Citrine Product Video (433785)

4.45ctw Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 20.32

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1.23ct White Rainbow Moonstone, Oval, Transparent

1.23ct White Rainbow Moonstone, Oval, Transparent

8 x 6 mm (calibrated)

$ 39.20

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1.65ct Pink Morganite, Round, VS

1.65ct Pink Morganite, Round, VS

7.5 mm (calibrated)

$ 90.39

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3.33ct Pink Strawberry Quartz, Oval, Transparent

3.33ct Pink Strawberry Quartz, Oval, Transparent

11 x 9 mm (calibrated)

$ 24.97

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5.49ct Green Prehnite, Fancy, Translucent

5.49ct Green Prehnite, Fancy, Translucent

15.3 x 10.8 mm

$ 9.02

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1.25ct Pink Morganite, Pear Shape, VVS-VS

1.25ct Pink Morganite, Pear Shape, VVS-VS

10.3 x 6.1 mm

$ 95.87

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0.83ct Multicolor Opal, Oval, Transparent

0.83ct Multicolor Opal, Oval, Transparent

8 x 6 mm (calibrated)

$ 36.37

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1.42ct Violet Amethyst, Square, SI

1.42ct Violet Amethyst, Square, SI

7 x 7 mm (calibrated)

$ 11.31

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1.21ctw Yellow Citrine, Pear Shape, VS

1.21ctw Yellow Citrine, Pear Shape, VS

7 x 5 mm (calibrated)

$ 6.03

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5.42ct Brown Smoky Quartz, Round, VVS

5.42ct Brown Smoky Quartz, Round, VVS

12 mm (calibrated)

$ 17.82

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7.35ct Multicolor Ruby In Fuchsite, Marquise, Translucent

7.35ct Multicolor Ruby In Fuchsite, Marquise, Translucent

25.2 x 12.6 mm

$ 55.00

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81.97ct Multicolor Jasper, Oval, Opaque

81.97ct Multicolor Jasper, Oval, Opaque

36.3 x 29.1 mm

$ 42.21

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1.40ctw Red Rhodolite Garnet, Square, VS

1.40ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 12.26

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5.20ct Multicolor Agate, Oval, Opaque

5.20ct Multicolor Agate, Oval, Opaque

11 x 10 mm

$ 8.81

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2.05ctw Red Pyrope Garnet, Marquise, VVS-VS

2.05ctw Red Pyrope Garnet, Marquise, VVS-VS

10 x 5 mm

$ 17.97

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16.88ct Multicolor Agate, Round, Opaque

16.88ct Multicolor Agate, Round, Opaque

16 mm (calibrated)

$ 16.82

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2.64ctw Violet Amethyst, Oval, VVS-VS

2.64ctw Violet Amethyst, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 14.46

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1.53ct Orange Hessonite Garnet, Square, VS

1.53ct Orange Hessonite Garnet, Square, VS

6 x 6 mm (calibrated)

$ 25.74

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0.02ct Black Diamond, Round, Opaque

0.02ct Black Diamond, Round, Opaque

1.9 mm (calibrated)

$ 15.94

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14.48ctw Multicolor Labradorite, Pear Shape, Translucent

14.48ctw Multicolor Labradorite, Pear Shape, Translucent

18 x 13 mm (calibrated)

$ 32.02

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18.16ct Purple Ruby-Zoisite, Flower Cut, Opaque

18.16ct Purple Ruby-Zoisite, Flower Cut, Opaque

16.4 x 14.9 mm

$ 22.07

View Gem
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Why Buy Natural Untreated Gemstones from GemSelect?

Why Choose Untreated Gemstones?

Untreated gemstones are valued for their natural color and clarity without artificial enhancement. Many buyers prefer these gems for authenticity, rarity, and long-term value.

Natural Loose Untreated Gems Online

Shop loose untreated gemstones online at GemSelect with confidence. Browse sapphires, rubies, spinels, aquamarine, garnet, tourmaline, and more with full disclosure.

Natural Untreated Gemstones for Jewelry and Collecting

Untreated Gemstones for Jewelry

Natural untreated gems are excellent for rings, earrings, pendants, and custom jewelry. Their original beauty makes every piece unique and meaningful.

Popular Untreated Gemstone Types

Popular choices include untreated sapphire, ruby, spinel, garnet, tourmaline, zircon, aquamarine, and many collector stones in a wide range of colors.

Certified Natural Gemstones

Many buyers choose untreated gemstones with gemological reports for added confidence. Certification can confirm identity and indicate whether treatments are present.

Collector Quality Untreated Gems

Collectors appreciate untreated gemstones because naturally fine examples are rarer than treated material. These stones can be especially desirable when color and clarity are strong.

Calibrated Untreated Gemstones

We also offer calibrated untreated gemstones in popular sizes suitable for standard jewelry settings, making custom designs easier and faster.

Worldwide Shipping from GemSelect

GemSelect offers secure online ordering, detailed product images, and worldwide delivery so you can shop untreated gemstones from anywhere.

Learn more about gemstone treatments, identification, and care on our Gemstone Information Pages.

FAQs

What does untreated gemstone mean?

An untreated gemstone has not undergone enhancement processes such as heating, dyeing, filling, coating, or diffusion to improve appearance.

Are untreated gemstones more valuable?

Often yes, especially in sapphire, ruby, and other premium gems where fine untreated stones are rarer than treated examples.

How can I verify a gemstone is untreated?

Independent laboratory certification is the best way to verify whether a gemstone is natural and untreated.

Which gemstones are commonly sold untreated?

Spinel, garnet, zircon, tourmaline, aquamarine, and some sapphires or rubies are often available untreated depending on source and quality.

Are all untreated gemstones natural?

Natural untreated gemstones are mined stones that have not been enhanced after cutting. Always buy from trusted sellers with clear disclosure.

GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

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A pleasant experience and many choices to choose from

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good navigation and simple interface.

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Plan on purchasing on an ongoing basis. So far.....so good....

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Web site is very simple to navigate Selection is terrific

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Overall Rating -> 9 star ratings

Ita's a pretty good and simple way to find gems that youa're looking for amazing selection

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